EP 2969745 B1 20180613 - CAVITY ACOUSTIC TONES SUPPRESSION
Title (en)
CAVITY ACOUSTIC TONES SUPPRESSION
Title (de)
UNTERDRÜCKUNG VON AKUSTISCHEN HOHLRAUMTÖNEN
Title (fr)
SUPPRESSION DE TONALITÉS ACOUSTIQUES DANS UNE CAVITÉ
Publication
Application
Priority
- GB 201304722 A 20130315
- EP 13275066 A 20130315
- GB 2014050760 W 20140313
- EP 14711573 A 20140313
Abstract (en)
[origin: WO2014140589A1] A cavity system that tends to increase the thickness (28) of the shear layer(22), comprising: a cavity (2) and a plate (104); the plate (104) comprising a plurality of holes (4) through it, wherein the proportion of the area of the plate (104) taken up by the holes is ≥60%, for example ≥75% or ≥90%; the plate (104) being positioned in the proximity of a leading edge (14) of the cavity (2); the surface of the plate (104) at a perpendicular or oblique angle to the actual or intended flow direction (6).The plate (104) may be positioned at an oblique angle to the flow direction (6). One or more flow alteration elements, for example elongate members (34) positioned across the holes and/or members (38) positioned directly behind or in front of the holes (4).
IPC 8 full level
B64C 21/02 (2006.01)
CPC (source: EP GB US)
B64C 21/00 (2013.01 - GB); B64C 21/02 (2013.01 - EP US); B64C 21/10 (2013.01 - GB); B64C 23/005 (2013.01 - US); B64C 23/06 (2013.01 - GB); F15D 1/10 (2013.01 - GB); B64C 2025/003 (2013.01 - EP US); B64C 2230/08 (2013.01 - EP US); B64C 2230/14 (2013.01 - GB); Y02T 50/10 (2013.01 - EP US)
Citation (examination)
US 2005242629 A1 20051103 - RAASAKKA JOHN P [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014140589 A1 20140918; EP 2969745 A1 20160120; EP 2969745 B1 20180613; ES 2677671 T3 20180806; GB 201404471 D0 20140430; GB 2514453 A 20141126; GB 2514453 B 20150722; TR 201809766 T4 20180723; US 2016031549 A1 20160204; US 9487289 B2 20161108
DOCDB simple family (application)
GB 2014050760 W 20140313; EP 14711573 A 20140313; ES 14711573 T 20140313; GB 201404471 A 20140313; TR 201809766 T 20140313; US 201414776324 A 20140313